GB1247336A - Creación de Inventos y Patentes con Inteligencia Artificial

GB1247336A – Improvements in or relating to flowmeters
– Google Patents

GB1247336A – Improvements in or relating to flowmeters
– Google Patents
Improvements in or relating to flowmeters

Info

Publication number
GB1247336A

GB1247336A
GB44187/67A
GB4418767A
GB1247336A
GB 1247336 A
GB1247336 A
GB 1247336A
GB 44187/67 A
GB44187/67 A
GB 44187/67A
GB 4418767 A
GB4418767 A
GB 4418767A
GB 1247336 A
GB1247336 A
GB 1247336A
Authority
GB
United Kingdom
Prior art keywords
pulses
impeller
drum
pulse
output
Prior art date
1967-09-28
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Application number
GB44187/67A
Inventor
William Alexander Byars
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Allard Way Holdings Ltd

Original Assignee
Elliott Brothers London Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1967-09-28
Filing date
1967-09-28
Publication date
1971-09-22

1967-09-28
Application filed by Elliott Brothers London Ltd
filed
Critical
Elliott Brothers London Ltd

1967-09-28
Priority to GB44187/67A
priority
Critical
patent/GB1247336A/en

1968-09-16
Priority to US762232A
priority
patent/US3595081A/en

1968-09-26
Priority to FR1586492D
priority
patent/FR1586492A/fr

1971-09-22
Publication of GB1247336A
publication
Critical
patent/GB1247336A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

G—PHYSICS

G01—MEASURING; TESTING

G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME

G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow

G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects

G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission

G01F1/115—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with magnetic or electromagnetic coupling to the indicating device

G—PHYSICS

G01—MEASURING; TESTING

G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME

G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow

G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects

G01F1/11—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with mechanical coupling to the indicating device

Abstract

1,247,336. Digital flowmeters. ELLIOTT BROS. (LONDON) Ltd. 18 Sept., 1968 [28 Sept., 1967], No. 44187/67. Heading G4H. [Also in Division G1] A fluid flowmeter comprises a transmitter giving an output signal having a timing characteristic of the rate of fluid flow, data processing circuitry operative to supply to an indicator signals dependent upon the transmitter output for non-zero outputs only, and control means operable to render the data processing circuitry operative to supply to the indicator signals relating to a zero output rate. The flowmeter comprises a non-magnetic conduit connected, for example, in the fuel supply of an aircraft engine. An electric motor within the conduit drives a hollow drum fitting closely within the conduit and inside the drum is an impeller driven from the drum through a spiral spring. The greater the flow past the impeller the greater will be the force required to turn the impeller and the greater the deflection of the spring and the angular lag of the impeller relative to the drum. Magnets on the drum and on the impeller coact with sensing coils which produce signals indicating by their phase displacement the lag of the impeller and consequently the fuel flow. The pulses from the drum magnet are applied at e, Fig. 5, to a pulse-shaper 106, and the pulses from the impeller magnet are applied at k to a pulse-shaper 110. A crystal oscillator generates clock pulses a, Fig. 6, which are squared at 102(b) and applied to a divider 103 to give longer pulses c. This waveform is differentiated and rectified at 104 giving pulses d spaced so that at least one revolution of the rotary parts of the flowmeter can take place between them. The pulses d are applied to a bi-stable switch 105 the other side of which receives the differentiated and rectified pulses g from the drum magnet. The output h of the switch 105 is differentiated and rectified to produce pulses j representing one of the g pulses occurring between successive d pulses. The j pulses pass to a second bi-stable switch 109, the other input m of which is from the impeller magnet. The output n of switch 109 consists of a series of pulses having a duration proportional to the rate of flow, there being only one pulse in each sampling period (defined by pulses d). The pulses are smoothed at 112 to produce a corresponding amplitude which is compared at 113 with a variable voltage from a potentiometer 114, the error signal r being applied to drive the slider to nullify the error. An indicator 115 then shows the rate of fuel consumption. The pulses n are also used to gate (118) clock pulses b to a divider 119 which gives an output t representing a given unit of fuel consumed. These pulses are counted at 121 registering the total fuel consumed. The logic circuit L fixes a minimum length for the pulses n. If the minimum length is exceeded the pulse is passed without alteration. If it is less than the minimum length no pulse is passed. This cancels pulses which represent zero flow. A switch S is connected in a shunt path round the logic circuit consisting of a relay operated by a push-button via a mono-stable. This is used to test the indicator 121 by passing pulses to it for the period of the monostable. The indicator is automatically reset by subtracting pulses after the test. Specification 1,069,466 is referred to.

GB44187/67A
1967-09-28
1967-09-28
Improvements in or relating to flowmeters

Expired

GB1247336A
(en)

Priority Applications (3)

Application Number
Priority Date
Filing Date
Title

GB44187/67A

GB1247336A
(en)

1967-09-28
1967-09-28
Improvements in or relating to flowmeters

US762232A

US3595081A
(en)

1967-09-28
1968-09-16
Flowmeters

FR1586492D

FR1586492A
(en)

1967-09-28
1968-09-26

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

GB44187/67A

GB1247336A
(en)

1967-09-28
1967-09-28
Improvements in or relating to flowmeters

Publications (1)

Publication Number
Publication Date

GB1247336A
true

GB1247336A
(en)

1971-09-22

Family
ID=10432177
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB44187/67A
Expired

GB1247336A
(en)

1967-09-28
1967-09-28
Improvements in or relating to flowmeters

Country Status (3)

Country
Link

US
(1)

US3595081A
(en)

FR
(1)

FR1586492A
(en)

GB
(1)

GB1247336A
(en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

DE2243936C3
(en)

1972-09-07
1975-06-05
Diessel Gmbh & Co, 3200 Hildesheim

Rotary piston meter

JPS54141166A
(en)

1978-04-25
1979-11-02
Toukiyouto
Water meter

CA2097255A1
(en)

1993-05-28
1994-11-29
Neat Tuot
Automatic tester and calibrator for instruments or fluid meters

CN103968895B
(en)

2014-04-22
2015-11-04
煤科集团沈阳研究院有限公司
A kind of underground coal mine air quantity analyser and analytical approach

Family Cites Families (5)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US2814949A
(en)

1954-12-14
1957-12-03
Gen Electric
Mass flow meter

US2943487A
(en)

1957-11-01
1960-07-05
David M Potter
Mass flow meter using tandem rotors

US3049917A
(en)

1959-05-28
1962-08-21
Bendix Corp
Flowmeter

US3232110A
(en)

1962-01-24
1966-02-01
Yao T Li
Mass flow meter

GB1069466A
(en)

1963-12-10
1967-05-17
Elliott Brothers London Ltd
Improvements in and relating to mass flowmeters

1967

1967-09-28
GB
GB44187/67A
patent/GB1247336A/en
not_active
Expired

1968

1968-09-16
US
US762232A
patent/US3595081A/en
not_active
Expired – Lifetime

1968-09-26
FR
FR1586492D
patent/FR1586492A/fr
not_active
Expired

Also Published As

Publication number
Publication date

US3595081A
(en)

1971-07-27

FR1586492A
(en)

1970-02-20

Información de contacto